The word calculus (pl. calculi) is Latin, referring to small stones used for counting. It is a branch of Math that deals with the study of limits, functions, derivatives, integrals and infinite series. In general terms, calculus may refer to any method of calculation that is guided by symbolic manipulation of expressions.

There are two main branches of calculus, namely;

  • Differential calculus
  • Integral calculus

Initially, calculus was called calculus of infinitesimals or infinitesimal calculus. Some other well known, though minor branches of calculus are: Join, Variation, Lambda and Pi calculus.

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